Not even slightly?
So you don't think there is an alarming rise in fans/audience members feeling emboldened to the point of confronting what are in actuality strangers to criticise their work? There's a gap between telling someone you didn't like their movie VS murder, yes, but there is a link between the two regarding audience members taking their criticism of works way too far. Granted we don't know enough about the event in Kyoto, but we can take a fairly decent stab at the reason from what we do know.
Fans have no right to cross those boundaries. By validating it (like some in this thread are doing by saying it's not rude), it's being enabled. And will only get worse.
Yes, not even slightly. As of yet it's completely unclear what the motives behind the Kyoani tragedy are. Don't fucking bring it up and try to bend the narrative to demonize some dude who made an innocuous comment at a party.